CN101272004A - Design method of metal grid structure horn antenna - Google Patents
Design method of metal grid structure horn antenna Download PDFInfo
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- CN101272004A CN101272004A CNA2008101042928A CN200810104292A CN101272004A CN 101272004 A CN101272004 A CN 101272004A CN A2008101042928 A CNA2008101042928 A CN A2008101042928A CN 200810104292 A CN200810104292 A CN 200810104292A CN 101272004 A CN101272004 A CN 101272004A
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Abstract
A design method for a horn antenna with a metallic grid structure is characterized in that the following steps are comprised: (1) the operating wavelength of the designed horn antenna is determined; (2) a horn antenna with an ordinary rectangular cross section is selected; (3) a flange structure is designed by adopting a CST software; (4) the designed flange is welded on a port of the horn; (5) the metallic grid structure is designed by using the CST software; (6) the designed metallic grid structure is embedded into a foamed material to constitute a metallic foamed material with the metallic grid located in the center of the foamed material; (7) the two layers of designed metallic foamed material are combined together; (8) the acquired metallic foamed material is arranged on the top of the flange, thus finishing the design of the horn antenna with the metallic grid structure. By adding the metallic grid structure at the horn opening, the antenna designed by the invention greatly improves the gain of the antenna and broadens the application range of the antenna.
Description
Technical field
The invention provides a kind of method that designs high-gain aerial, particularly a kind of method for designing of metal grid structure horn antenna.
Background technology
Compact dimensions and the high directivity antenna that possesses the single-point feedback device had very high tempting prospect in actual applications in recent years, parabolic antenna has the characteristic of high directivity, but in some special application fields, parabolic antenna is oversize to have limited its application.Common microstrip antenna (Microstrip antenna) feed structure is simple, but its directivity is not high, but also is subjected to the influence of surface wave; The array antenna that microstrip element is formed is a kind of antenna of high directivity, but the feeding network more complicated, loss is bigger, limit its bandwidth and radiation efficiency, therefore, research possesses compact dimensions simultaneously, and the simple high directivity antenna of feed mechanism has just caused people's very big interest naturally.
How the novel artificial material such as the appearance of Metamaterials material for the design of new antenna has indicated a new approach, but are applied among the design of antenna, also need people further to explore.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide a kind of by novel artificial material-network, a kind of compact conformation of making also has high directivity and the method for designing of the horn antenna of high-gain.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method for designing of metal grid structure horn antenna, its characteristics are to comprise the following steps:
A kind of method for designing of metal grid structure horn antenna is characterized in that comprising the following steps:
(1) operation wavelength of determining designed horn antenna is λ;
(2) horn antenna of a common square-section of selection, the width w of the rectangular waveguide that horn antenna connected
1, length is L
1, the height of loudspeaker is L, and bell-mouthed width is w_aperture, and length is L_aperture;
(3) adopt CST software that flange plate structure is designed, the length of designed ring flange is L_flange, and width is w_flange, and its size is consistent with horn mouth end face size;
(4) the designed good ring flange of step (3) is welded on horn mouth;
(5) adopt CST software design metal grill structure, whole network size is consistent with the ring flange size; Bore is a in the metal grill unit, and the cycle of metal grill unit is P, and the thickness of metal grill is d
1
(6) metal grill structure that step (5) is designed embeds in the foamed material and constitutes metal foaming material, and metal grill is positioned at the middle of foamed material, and the thickness of this metal foaming material is h;
(7) the designed metal foaming material of two-layer step (6) is combined, forming gross thickness is the metal foaming material of 2h;
(8) be that the metal foaming material of 2h is positioned over the ring flange top with the gross thickness of step (7) gained, its below is d apart from the distance of ring flange, and a kind of metal grid structure horn antenna design is finished.
The width w of the rectangular waveguide in the described step (2)
1Be λ/4~λ/2, the length L of rectangular waveguide
1Be λ/2~λ.
The height L scope of the loudspeaker in the described step (2) is λ~3 λ.
Bell-mouthed width in the described step (2) is λ/2~λ, and bell-mouthed length is 1.5 λ~2 λ.
The length of the ring flange in the described step (3) is 2.5 λ~3.5 λ, and the width of ring flange is 2.5 λ~3.5 λ.
Ring flange in the described step (3) is shaped as hollow structure, and the part corresponding with horn mouth removed in the centre.
The size of bore a is λ/4~λ/3 in the metal grill unit in the described step (5), and the cycle P of metal grill unit is λ/4~λ/3, the thickness d of metallic mesh material
1Be λ/200~λ/100.
The thickness h of the metal foaming material in the described step (6) is λ/4~λ/2.
Foamed material in the described step (6) is a kind of material with low-refraction.
Metal foaming material in the described step (8) is λ/4~λ/2 apart from ring flange apart from d.
The advantage that the present invention is compared with prior art had is: the designed antenna of the present invention is by applying the metal grill structure at horn mouth, the gain that has improved antenna greatly makes that its range of application is more extensive, can satisfy the needs of more areas.
Description of drawings
Fig. 1 is the structural representation of selected common horn antenna in the embodiment of the invention; L is the loudspeaker height among the figure;
Vertical view in Fig. 2 embodiment of the invention behind the horn mouth welding flange, wherein L_aperture is bell-mouthed width, and w_aperture is bell-mouthed length, and L_flange is the width of ring flange, and w_flange is the length of ring flange;
Fig. 3 is the metal grill schematic diagram in the embodiment of the invention, and wherein 1 is metal, and 2 is foam, and P is the grid cycle, and a is a bore in the grid, and h is the thickness of single-layer metal foaming structure behind the parcel foam;
The metal grid structure horn antenna schematic diagram that Fig. 4 gets for the designing institute in the embodiment of the invention; 3 is rectangular waveguide among the figure, and 4 is metal foaming material, and 5 is ring flange, and L is the loudspeaker height, and 2h is the gross thickness of metal foam structures, and d is the distance of metal foaming material apart from ring flange.
Embodiment
Introduce the present invention in detail below in conjunction with the drawings and the specific embodiments.
The present invention is a kind of method for designing of metal grid structure horn antenna, concrete implementation step:
(1) operating frequency of determining designed horn antenna is 12.5GHz, and promptly its operation wavelength λ is 24mm;
(2) horn antenna of a common square-section of selection, the wide of the rectangular waveguide that horn antenna connected is 9.525mm, and long is 19.05mm, and the height of loudspeaker is 47.5mm, and bell-mouthed length is 41.98mm, width is 19.05mm, as shown in Figure 1;
(3) in horn mouth welding flange structure, adopt software CST that flange plate structure is designed, its size is consistent with selected horn mouth end face size, the length of continuous conversion ring flange and the value of width, can know that the length when ring flange is 72.38mm, outgoing gain maximum when length is 72.25mm, effect is best; This is organized the parameter that data are chosen as ring flange, and ring flange described here is a hollow structure, and the part corresponding with horn mouth just in time removed in the centre; Spill horn mouth, as shown in Figure 2;
(4) selecting metal material is copper, adopts software CST design metal grill structure, adopts printed circuit board fabrication techniques metal grill structure, and whole network size is consistent with the ring flange size; Bore a is 6.4mm in the metal grill unit, and the cycle P of metal grill unit is 7.5mm, the metal grill thickness d
1Be 0.2mm, select the very low EMERSON﹠amp of dielectric constant; The foamed material of the pp-8 model of CUMING places the middle of foamed material with designed metal grill structure, forms metal foaming material; The gross thickness of metal foaming material is 8.5mm; Then two-layer identical metal foaming material is combined, constituting thickness is the metal foaming material of 17mm; As shown in Figure 3;
(5) the double-level-metal foamed material that will go up the step gained is positioned over the ring flange top, and its below is 8.5mm apart from ring flange apart from d, and a kind of metal grid structure horn antenna design is finished, as shown in Figure 4.
Claims (10)
1, a kind of method for designing of metal grid structure horn antenna is characterized in that comprising the following steps:
(1) operation wavelength of determining designed horn antenna is λ;
(2) horn antenna of a common square-section of selection, the width w of the rectangular waveguide that horn antenna connected
1, length is L
1, the height of loudspeaker is L, and bell-mouthed width is w_aperture, and length is L_aperture;
(3) adopt CST software that flange plate structure is designed, the length of designed ring flange is L_flange, and width is w_flange, and its size is consistent with horn mouth end face size;
(4) the designed good ring flange of step (3) is welded on horn mouth;
(5) adopt CST software design metal grill structure, whole network size is consistent with the ring flange size; The interior bore of metal grill unit is a, and the cycle of metal grill unit is P, and grid thickness is d
1
(6) metal grill structure that step (5) is designed embeds in the foamed material and constitutes metal foaming material, and metal grill is positioned at the middle of foamed material, and the thickness of this metal foaming material is h;
(7) the designed metal foaming material of two-layer step (6) is combined, forming gross thickness is the metal foaming material of 2h;
(8) be that the metal foaming material of 2h is positioned over the ring flange top with the gross thickness of step (7) gained, its below is d apart from the distance of ring flange, and a kind of metal grid structure horn antenna design is finished.
2, the method for designing of a kind of metal grid structure horn antenna according to claim 1 is characterized in that, the width w of the rectangular waveguide described in the step (2)
1Be λ/4~λ/2, the length L of rectangular waveguide
1Be λ/2~λ.
3, the method for designing of a kind of metal grid structure horn antenna according to claim 1 is characterized in that, the height L scope of the loudspeaker described in the step (2) is λ~3 λ.
4, the method for designing of a kind of metal grid structure horn antenna according to claim 1 is characterized in that, the bell-mouthed width w_aperture described in the step (2) is λ/2~λ, and bell-mouthed length L _ aperture is 1.5 λ~2 λ.
5, the method for designing of a kind of metal grid structure horn antenna according to claim 1 is characterized in that, the ring flange described in the step (3) is shaped as hollow structure, and the part corresponding with horn mouth removed in the centre.
6, the method for designing of a kind of metal grid structure horn antenna according to claim 1 is characterized in that, the length L _ flange of the ring flange described in the step (3) is 2.5 λ~3.5 λ, and the width w_flange of ring flange is 2.5 λ~3.5 λ.
7, the method for designing of a kind of metal grid structure horn antenna according to claim 1, it is characterized in that, the size of the interior bore a of the metal grill unit described in the step (5) is λ/4~λ/3, and the cycle P of metal grill unit is λ/4~λ/3, the thickness d of metallic mesh material
1Be λ/200~λ/100.
8, the method for designing of a kind of metal grid structure horn antenna according to claim 1 is characterized in that, the thickness h of the metal foaming material described in the step (6) is λ/4~λ/2.
9, the method for designing of a kind of metal grid structure horn antenna according to claim 1 is characterized in that: the foamed material in the described step (6) is a kind of material with low-refraction.
10, the method for designing of a kind of metal grid structure horn antenna according to claim 1 is characterized in that, the metal foaming material described in the step (8) is λ/4~λ/2 apart from ring flange apart from d.
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CN2008101042928A CN101272004B (en) | 2008-04-17 | 2008-04-17 | Design method of metal grid structure horn antenna |
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CN2008101042928A CN101272004B (en) | 2008-04-17 | 2008-04-17 | Design method of metal grid structure horn antenna |
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CN101272004A true CN101272004A (en) | 2008-09-24 |
CN101272004B CN101272004B (en) | 2012-02-01 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102110890A (en) * | 2011-02-11 | 2011-06-29 | 中国科学院光电技术研究所 | High-gain horn antenna based on inhomogeneous medium |
CN101404508B (en) * | 2008-10-15 | 2012-08-29 | 北京航空航天大学 | Compact range feed source suitable for indoor ultra-broadband wireless communication frequency band |
CN102999647A (en) * | 2011-09-16 | 2013-03-27 | 深圳光启高等理工研究院 | Design method of metamaterial small antenna structure |
CN103606748A (en) * | 2013-11-26 | 2014-02-26 | 西安电子科技大学 | H-plane horn antenna based on Hanming window function caliber field distribution |
CN104241828A (en) * | 2014-09-19 | 2014-12-24 | 江苏军一物联网股份有限公司 | Ultrathin planar antenna used for ultrahigh frequency RFID |
CN106848593A (en) * | 2016-12-29 | 2017-06-13 | 中国科学院上海微系统与信息技术研究所 | A kind of Miniaturization high-gain Meta Materials electromagnetic horn |
-
2008
- 2008-04-17 CN CN2008101042928A patent/CN101272004B/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101404508B (en) * | 2008-10-15 | 2012-08-29 | 北京航空航天大学 | Compact range feed source suitable for indoor ultra-broadband wireless communication frequency band |
CN102110890A (en) * | 2011-02-11 | 2011-06-29 | 中国科学院光电技术研究所 | High-gain horn antenna based on inhomogeneous medium |
CN102110890B (en) * | 2011-02-11 | 2013-10-30 | 中国科学院光电技术研究所 | High-gain horn antenna based on inhomogeneous medium |
CN102999647A (en) * | 2011-09-16 | 2013-03-27 | 深圳光启高等理工研究院 | Design method of metamaterial small antenna structure |
CN102999647B (en) * | 2011-09-16 | 2016-07-27 | 深圳光启高等理工研究院 | A kind of method for designing of metamaterial small antenna structure |
CN103606748A (en) * | 2013-11-26 | 2014-02-26 | 西安电子科技大学 | H-plane horn antenna based on Hanming window function caliber field distribution |
CN104241828A (en) * | 2014-09-19 | 2014-12-24 | 江苏军一物联网股份有限公司 | Ultrathin planar antenna used for ultrahigh frequency RFID |
CN106848593A (en) * | 2016-12-29 | 2017-06-13 | 中国科学院上海微系统与信息技术研究所 | A kind of Miniaturization high-gain Meta Materials electromagnetic horn |
CN106848593B (en) * | 2016-12-29 | 2019-06-14 | 中国科学院上海微系统与信息技术研究所 | A kind of Miniaturization high-gain Meta Materials electromagnetic horn |
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